New species of Nothobrya (Collembola: Entomobryidae) from Southeast Brazil

Abstract

Entomobryidae is very diverse and is distributed worldwide. It was recently revised by Zhang & Deharveng (2014), who integrated molecular data with information on the specialized tergal chaetae. The new classification proposed included seven subfamilies, one of which, Nothobryinae, is characterized by the presence of PAO, falcate mucro and few chaetae on the trochanteral organ.Nothobrya, one of the three genera of Nothobryinae, was proposed by arlé (1961) for N. schubarti based on samples collected in the state of Pernambuco, Brazilian Northeast. Samples of N. schubarti had been previously collected by Otto Schubart in the state of Piauí (also Northeast), about 700 km from the type locality. A second genus of Nothobryinae, Capbrya, from South Africa, was described by Barra (1999), who noted its similarity with Nothobrya based on the presence of the PAO, falcate mucro, body segmentation and the absence of scales. Baquero et al. (2005) erected the third Nothobryinae genus, Hispanobrya, with the type species H. barrancoi from Spain. This genus, also monospecific, is similar to Capbrya and Nothobrya by the presence of PAO, absence of scales and falcate mucro. Although Nothobrya shares characteristics with Capbrya and Hispanobrya, it deviates from both genera, especially in the segmentation of the antenna (with six segments).Nothobrya has remained monospecific until now. However, field work in the vicinity of urban areas of Rio de Janeiro city has revealed the presence of the genus in the Brazilian Southeast. The study of the external morphology from southeastern material has revealed that it consists of a new species, which is herein described. MATERIAL AND METHODSThe specimens studied were collected using an entomological aspirator at an urban area. The fauna from litter and soil were extracted using Berlese-Tullgren funnels, sorted under a stereomicroscope and mounted on glass slides according to arlé & MenDonça (1982). Illustrations were made using an optical microscope. The type material was deposited in the Collembola Collection of the Entomology Department, Museu Nacional/ UFRJ, Rio de Janeiro, RJ, Brazil (acronym CM/MNRJ).Abbreviations: (Abd) abdominal segment, (Ant) antennal segment, (MN/UFRJ) Museu Nacional da Universidade Federal do Rio de Janeiro, (PAO) postantennal organ, (Th) thoracic segment. TAXONOMY AND NOMENCLATURE